[TUHS] Another awk version is now available

[Steffen Nurpmeso via TUHS]

arnold at skeeve.com wrote in
 <202609270705.68R75txG007388 at freefriends.org>:
 |Steffen Nurpmeso via TUHS <tuhs at tuhs.org> wrote:
 |> Constrained by that neither any ISO C nor (thus) any POSIX offer
 |> the possibility to truly dig into "multibyte character sets" for
 |> eq regular expressions the necessary way.
 |> (Collation, equivalence classes.
 |
 |True.  The charset library used in gawk supports equivalence classes
 |using pregenerated tables for Unicode; the lack of standard APIs for
 |collating sequences and equivalence classes is a problem. But not
 |a new one.
 |
 |> Let alone the full power of
 |> U(nicode)T(echnical)S(tandard)18 Unicode regular expressions.
 |
 |It's been a while since I looked. The unicode.org web site is (or was)
 |a maze of twisty litle passages, all alike, but ISTR they have a regex
 |library that fully implements their standard. However, I don't know if
 |it supports the POSIX BRE/ERE flavors and POSIX leftmost-longest rules.

Ok .. i was more out for all the possibilities regarding notation
(\u{HEX code point}, \p{roperty}, \P{..}, \N{ame}; \b{oundary}).
(Newest POSIX also supports "leftmost shortest", as does MinRX.)

 |> And also constrained by "multibyte character set" meaning NUL
 |> terminated string compatible i would think, given that you
 |> signalled "won't fix" for nawk giving this argument as the reason
 |
 |I'm not sure what you're referring to here. The One True Awk (the
 |direct descendant of the original Unix awk) uses C strings
 |internally, so doing anything with NUL is a problem. "Fixing" that
 |is too much work, and I no longer maintain that code, somebody else does.

That was 'FS="\0" differences'[1] i surely ran into during some
"safe pipe" -print0 discussion, where it was said that POSIX says
that if "FS is a null string, the behavior is unspecified" (even
the newest says that), but all tested awks support it.

  [1] https://github.com/onetrueawk/awk/issues/165

 |> Thanks for decades of awk work, i use awk very frequently.
 |
 |You are welcome.
 |
 |Arnold
 --End of <202609270705.68R75txG007388 at freefriends.org>

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)